本文選題：水文地質(zhì)特征 + 第四含水層　； 參考：《安徽理工大學(xué)》2015年碩士論文

【摘要】：通過系統(tǒng)分析了青東煤礦13采區(qū)地質(zhì)及水文地質(zhì)特征。結(jié)合地質(zhì)與水文地質(zhì)補(bǔ)勘,查明采區(qū)內(nèi)各主采煤層(7、82和10煤層)上覆各含、隔水層的的厚度分布規(guī)律、巖性及結(jié)構(gòu)組成、富水性等,分析得出“三隔”厚度較大,分布穩(wěn)定,具有良好的隔水性能,“四含”厚度較小且富水性弱；結(jié)合三維地震資料和原鉆探資料,查明基巖標(biāo)高起伏變化情況,確定基巖面的最低點(diǎn)、基巖風(fēng)化帶巖性、工程巖組特性及厚度分布規(guī)律等；利用采區(qū)已有勘探鉆孔資料,結(jié)合補(bǔ)勘巖土樣的物理、力學(xué)與水理特性測(cè)試結(jié)果,從而確定留設(shè)的煤柱為防砂煤柱；選定典型開采工作面開展數(shù)值模擬研究,分析采區(qū)內(nèi)煤層淺部開采過程中上覆巖層活動(dòng)規(guī)律,科學(xué)判定“兩帶”高度；采用現(xiàn)場(chǎng)探測(cè)、模擬計(jì)算等多種方法綜合研究給出不同水文工程地質(zhì)條件下的兩帶高度計(jì)算值；為淺部煤層機(jī)械化綜采和合理確定防水(砂)煤柱高度尺寸提供依據(jù)；對(duì)采區(qū)主采煤層提高上限開采技術(shù)可行性研究。從而提出合理留設(shè)安全煤巖柱。通過本文的研究,探明和正確評(píng)價(jià)采區(qū)的水文地質(zhì)條件,對(duì)于合理留設(shè)安全煤巖柱,充分開發(fā)和利用煤炭資源具有重要意義。
[Abstract]:Through the systematic analysis of the geological and hydrogeological features of the 13 mining area in the Qinghai East coal mine, combined with geological and hydrogeological exploration, the distribution of the thickness distribution of each main coal seam (7,82 and 10 coal seam) in the mining area, the distribution of the thickness of the aquifers, the lithology and structure, the water rich, and so on, have been found out that the thickness of the "three septum" is large, and the distribution is stable and has good quality. In water insulation, the thickness of the "four" is small and the water rich is weak; in combination with three dimensional seismic data and original drilling data, the elevation fluctuation of bedrock, the lowest point of the bedrock, the lithology of the bedrock weathering zone, the characteristics of the engineering rock group and the distribution of the thickness of the engineering rock group are determined. The results of the mechanical and hydraulic characteristics test determine the retained coal pillar as the sand prevention pillar, and select the typical mining face to carry out numerical simulation research, analyze the overlying strata Activity Regularity in the shallow coal mining process in the mining area, judge the height of the "two belts" scientifically, and give a comprehensive study of various methods, such as site detection, simulation calculation and so on. The two belt height calculation values under the hydrogeological and geological conditions provide the basis for the mechanized mechanized mechanized coal mining in shallow coal seam and the reasonable determination of the height size of the waterproof (sand) coal pillar, and the feasibility study on the upper limit mining technology for the main mining coal seam in the mining area. Hydrogeological conditions are of great significance for the rational establishment of safe coal pillars and the full exploitation and utilization of coal resources.

【學(xué)位授予單位】：安徽理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：P641.461;TD74

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